Preventing the adverse effects of ice and snow on crops as soon as possible

Winter wheat in North China is mainly to prevent damage to wheat seedlings that are weak and have fewer tillers. It is also necessary to pay special attention to wheat varieties that are weak in winter and take appropriate insulation measures as soon as possible to prevent emergence of dead seedlings. In wheat cultivation and water management, the wheat fields after the snow generally do not need to be poured with frozen water, and will be poured back to Qingshui early in the spring and early application of green manure to achieve the purpose of early rejuvenation. The key measures for all kinds of wheat fields before winter should be paid attention to timely conservation tillage, when the topsoil appears dry thin layer, timely repression measures to prevent run in wheat fields. For wheat fields that are not able to feed frozen water, in addition to cultivating the soil, suitable amount of late-frozen frozen water will be provided. For the wheat in Hubei, Sichuan, Anhui, and Jiangsu in the Yangtze River Valley, rain and snow are not conducive to the emergence of wheat fields. Drainage and loose soil should be stepped up and diligent efforts should be made to promote root development. Under conditions of low temperature and high soil moisture, favorable rust disease spreads, and preparations for prevention and control should be made early. Soil cultivation measures, such as clearing the ditch, loosening soil, and removing the earthworms, should be used for ventilation and warming purposes. Only when the base fertilizer is not applied to the farmland that lacks nutrients, if necessary, the combination of topdressing and loose soil can be used to top-up the phosphorus and potash fertilizers, together with a little nitrogen fertilizer. The role of phosphorus and potassium fertilizer is to promote the hair roots and improve the cold resistance of the crop. It is best to cover “warm ditch manure” to protect against freezing. Covering materials such as: rice bran, crushed straw, plant ash, peat and other organic fertilizers, etc. These materials can also be used for soil improvement after ploughing into soil after decomposition. Vegetable winter storage cabbage is in the harvest period, where the control of water in the vegetable field, the extent of snow damage is small, when harvested, some outer leaves can be peeled into the pit; if the snow before pouring water, vegetable fields, snow and ice The loss of vegetables will be greater in the coming season, especially for those Chinese cabbages that have been watered ahead of time in pursuit of high yields. For clear-winter cabbages in the Yellow River valley, measures to clean up, remove and cover them in time after snow are conducive to wintering. For the wintering leafy vegetables such as spinach, pakchoi, etc., after the cold rain and snow, the leaves are frozen, and measures for clearing snow, heat preservation, and cold prevention should be taken promptly. In areas where winter storage of Chinese cabbage is severely damaged, arrangements are made for the rapid production of leafy vegetables and sprouts. Ice and snow have a great impact on greenhouse vegetable production. Any damage to a greenhouse that has collapsed due to snow pressure is a foregone conclusion. For the management of uneaten greenhouse vegetable land, it is necessary to clean the snow at the top of the greenhouse, adopt adequate ventilation, and keep warm. Measures to prevent the growth of the vegetables after the snow even cloudy days; Second, we must control the water control of nitrogen, prevent cucumbers, tomatoes and other dishes of the leggy and weak seedlings. Therefore, the north should strengthen the production of protected land to make up for the damage to the production of vegetables in open areas. There are two steps that can be taken into consideration for fruit trees. First, once the orchard is covered by heavy snow, it is necessary to remove the snow from the branches in time to prevent the pressure from breaking and breaking the branches. At the same time, be careful not to subject the tree to secondary damage, and then use straw straw, etc. The tree trunks are covered and the tree trays are covered for thermal insulation. In the nursery, grass straws and films are covered in large areas. For late-maturing orchards that have not been harvested, timely clearing of snow and thin ice on the fruit area will be carried out to prevent fruit frostbite. Second, for frozen fruit trees such as citrus trees, after the temperature rises steadily after the snow, timely trimming is appropriate. Take small wounds, picking leaves, pruning, injury, sawing dry measures; on branches intact, leaves scorch untreated, as soon as possible artificial defoliation; the obvious branches of frostbite, promptly "bring" trim. Cut the mouth to control the wound properly and apply wax liquid to protect it. For the frozen and dead fruit trees, they must be removed as soon as possible and new seedlings should be planted. In short, to strengthen the management of the snow after the consequences of the park, mainly soil, organic fertilizer, thermal insulation of the bundled tree.

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